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公开(公告)号：US4144400A
公开(公告)日：1979-03-13
申请号：US748073
申请日：1976-12-06
申请人： Helmut Fiege , Josef Haydn , Johann Renner , Karlfried Wedemeyer
发明人： Helmut Fiege , Josef Haydn , Johann Renner , Karlfried Wedemeyer
CPC分类号： C07C37/14
摘要： A process for the continuous preparation of a ditertiary butylcresol wherein m- or p-cresol is reacted with isobutene at elevated temperature using H.sub.2 SO.sub.4 as catalyst wherein the process is carried out stepwise by introducing stepwise into a reaction mixture comprising substantially all of the cresol to be reacted with isobutene. The total amount of isobutene introduced is introduced such that less isobutene is charged in a last stage of the process than in the first stage thereof. Thereafter the catalyst is deactivated.
摘要翻译： 连续制备二叔丁基甲酚的方法，其中使用H 2 SO 4作为催化剂，在高温下使异丙烯与异丁烯反应，其中该步骤通过逐步引入含有基本上所有甲酚的反应混合物来逐步进行 与异丁烯反应。 导入的异丁烯的总量被引入，使得在该方法的最后阶段比在第一阶段中加入较少的异丁烯。 此后催化剂失活。
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公开(公告)号：US4088643A
公开(公告)日：1978-05-09
申请号：US731477
申请日：1976-10-12
IPC分类号： C07B61/00 , B01J27/00 , C01B7/00 , C07C20060101 , C07C67/00 , C07C239/00 , C07C281/20 , C07C107/02
CPC分类号： C07C409/40
摘要： A process for the preparation of azodicarbonamide by oxidation of hydrazodicarbonamide in an aqueous suspension containing hydrogen peroxide wherein the reaction is carried out in the presence of iodine at a temperature between 50.degree. and 95.degree. C. while the reaction mixture has a pH ranging from 1.0 to 5.0.
摘要翻译： 一种通过在含有过氧化氢的水性悬浮液中氧化偶氮二甲酰胺制备偶氮二酰胺的方法，其中反应在碘存在下在50℃至95℃的温度下进行，而反应混合物的pH范围为1.0 到5.0。
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公开(公告)号：US4034042A
公开(公告)日：1977-07-05
申请号：US338219
申请日：1973-03-05
申请人： Karlfried Wedemeyer , Rudolf Helm
发明人： Karlfried Wedemeyer , Rudolf Helm
IPC分类号： C07C211/56 , C07C20060101 , C07C67/00 , C07C209/00 , C07C209/54 , C07C87/28
CPC分类号： C07C209/68 , Y02P20/582
摘要： Object of the invention is a process for the production of 4-nitroso diphenylamine wherein N-nitroso diphenylamine is rearranged in the presence of an alcoholic hydrogen chloride solution by selecting the reaction conditions in such a way that the hydrochloride of 4-nitroso diphenylamine remains dissolved in the reaction medium. In this way spontaneous, uncontrollable decompositions do not occur.
摘要翻译： 本发明的目的是生产4-亚硝基二苯胺的方法，其中通过选择反应条件以使4-亚硝基二苯胺的盐酸盐保持溶解的方式，在含有醇的氯化氢溶液存在下重新排列N-亚硝基二苯胺 在反应介质中。 这样就不会发生自发的，不可控制的分解。
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公开(公告)号：US4012442A
公开(公告)日：1977-03-15
申请号：US559272
申请日：1975-03-17
IPC分类号： C07C143/70
CPC分类号： C07C309/00
摘要： Meta-chlorobenzene sulphonyl chloride and metadichlorobenzene are prepared by reacting benzene sulphonyl chloride with chlorine in the presence of a Friedel-Crafts catalyst at a temperature of from 0.degree. to 150.degree. C. After removing the catalyst, the resulting m-chlorobenzene sulphonyl chloride is reacted to form m-dichlorobenzene. The m-chlorobenzene sulphonyl chloride is preferably isolated prior to being reacted to m-dichlorobenzene. The reaction forming m-dichlorobenzene can be carried out via thermal clevage, thermal chlorolysis or chlorolysis initiated photochemically or by radicals.
摘要翻译： 在Friedel-Crafts催化剂存在下，在0〜150℃的温度下，使苯磺酰氯与氯反应制备了邻 - 氯苯磺酰氯和偏二氯苯。除去催化剂后，得到的间氯苯磺酰氯为 反应形成间二氯苯。 间氯苯磺酰氯优选在与间二氯苯反应之前分离。 形成间二氯苯的反应可以通过热裂解，热解氯或由光化学或自由基引发的氯解来进行。
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公开(公告)号：US3978131A
公开(公告)日：1976-08-31
申请号：US516946
申请日：1974-10-22
IPC分类号： C07B61/00 , B01J25/00 , B01J25/02 , C07C20060101 , C07C67/00 , C07C209/00 , C07C209/38 , C07C211/51 , C07C211/54 , C07C85/02
CPC分类号： C07C209/36
摘要： 4-AMINO-DIPHENYLAMINE IS PREPARED BY CATALYTICALLY HYDROGENATING 4-NITROSO-DIPHENYLAMINE IN A WATER-IMMISCIBLE SOLVENT IN THE PRESENCE OF Raney nickel as a catalyst. The hydrogenation reaction is generally carried out at a temperature in the range of from 20.degree. to 150.degree.C and can be carried out under an elevated hydrogen pressure of up to 50 atmospheres.
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